摘要
土工织物保护无粘性土时，土／土工织物与界面有时会形成天然滤层，天然滤层可由一些比较大的颗粒构成，根据颗粒拱桥的受力情况，从三铰拱模型出发建立颗粒拱模型，并求出颗粒拱形成时的浸蚀粒径。
The natural filtering layer may be formed some times between geotextile and interface when the soil without cohesiveness is protected by geotextile. Natural filtering layer can be made up of bigger grains. According to the pressure on arch bridge formed by grains, the modal of arch bridge of grains is established on modal of threepinned arch and grain diameter of erosion is worked out while arch bridge of grains is forming.
出处
《防渗技术》
1997年第4期1-5,共5页
Technique of Seepage Control
关键词
天然滤层
拱模型
浸蚀粒径
土工织物
无粘性土
natural filtering layer, model of arch bridge, grain diameter of erosion
